I purchased the original GM2 direct from this website and I have the invoice and registered code. I remember SDL saying on the Steam site when the game was being converted for Steam that current owners of GM2 will be eligible to receive a Steam code version of GM2 when release. I see that it has been out. How do I go about acquiring this new Steam code for the new GM2 and if I need to send my original code where do I email/send my serial proof?.